Filter-cell-washing machine



1,644, Oct. 1927" J' J- E 2 FILTER can. Sim; MACHINE Filed Nov'.6. 19252 Sheets-Sheet 1 Oct. 4

1,644,082 J. J. PREBLE FILTER CELL WASHING MACHINE Filed Nov. e. 1925 2SheetS-Sheet 2 Patented Oct. 4, 1927. 1,644,082

UNITED STATES PATENT OFFICE.

JAMES JARVIS PEEIBLE, OF NEWTON, MASSACHUSETTS, ASSIGNOB, TO SPRAY ENGI-NEERING COMPANY, OI BOSTON, MASSACHUSETTS; A CORPORATION OF MASSACHU-SETTS.

FILTEB-CELL-WASHING MACHINE.

Application filed November 6, 1925. Serial No. 67,263.

The object of the present invention is to provide a washing machine forcleaning dirty filter cells which will be simple in con- The presentinvention relates to washing machines, and more particularly to a washing machine for removing the dust and dirt retained on the filtering,media of an air filter cell. Air filters are now in wide'general use foreliminating the small, solid particles, called dust, floating in a gas,such as atmospheric air or a gas producedjn a manufacturing rocessQ.While innumerable materials "and forms thereof have been proposedheretofore for the elimination of the injurious dust, a standard cellfor holding the filtering media has been developed. This standardizedcell comprises a metallic box having expanded metal covers for the inletand outlet openings thereof between which the filtering media is placedand a pair of handles to facilitate the insertion of the cell into andits removal from the bank of cells making up the filter installation.This bank of cells comprises a plurality of the cells arranged in tiers.To maintain the filter installation in efficient operation it isnecessary to remove for cleaning a few of the dirty cells at a time andto replace them with clean cells. Usually the dirty cells are removedfor cleaning in accordance with a definite schedule. That is, in afilter installation containing, for instance, thirty cells made up fivetiers of six cells each, -fi ve dirty cells are removed for cleaningevery five The operator engages the handles of. I cells and dips themrepeatedly in a bath of hot water and caustic cell weighs thirty pouidsand by which the cheap to manufacture,

dirty cell with ease workman may clean the and celerity. v i

To the accomplishment of this object or ob ects, and such others as mayhereinafter appear, the features of the present invention relate tocertain devices, combinations and arrangements of parts, hereinafterescribed, and then set forth broadly and in detail in the appendedclaims.

The various features of the invention will be readily understood from aninspection of filter cell,

6 provided ing 5 is surrounded by a flan acilitate hanwith the handles 7and 8 to dling.

tering media in the 'filter cell comprlses a metal tank 9 supported onlegs vided with a cover 11 the flange 12 of which the labor of cleaningthe cells is consi rests. on a ledge 13 surrounding a rectanguable.Experience demonstrates that owing .lar opening 14 to the interior ofthe tank. to this labor the duty of cleaning the cells The bottomof thetank slopes'towards one is often neglected. It has been proposed tocorner thereof so that the tank may be wash the dirty cells in apower-driven madrained through a valve 15.

Secured to the ppposite sides of the intechine having a capacity toreceive a'pluraljity of dirty cells for cleaning in a single rior of thetank are the bearings 16 and 17 operation. Bearing in mind that only afor a pair of stub shafts 18 and 19 stub shafts are secured respectivelyto coufew cells are cleaned at a time .with 'intervals of days betweencleanin operations,- it plings 20 and 21 carried by the opposite endaces of a holder 22 for the filter cell.

is apparent that the oweriven machine 7 would be usedtoo in equently towarrant The sides 23 of the I 'mit the .hot water and caustic so a withllation. his a fact,

which the tank 9-is artiall filled free acthe expense of its instahowever, that it is highly desirable to 'process to the interior 0 theho der. As shown in Figs. 1 and 3 the holder is of a size to holder areopen to pervide some apparatus to relieve the workmen of the'heavy dutyof cleaning the dirty cells thus to insure their proper cleanin instrict receive within it the filter cell illustrated in Fig. 2. Thfilter cell is inserted by the accordance with the cleaning sch ule.

10 and pro- 1 struction and mode of operation and thus the accompanyingdrawings illustrating the tering media 1s positioned. The inlet open-The washingmachine for cleaning the fil- The I workman who grasps thehandle '8' in one hand and then lowers the cell into the holder.

The cell is clamped in place within the holder by a bar 24 pivoted atone end to the holder and provided at its other end with a slot 25 toembrace a screw 26 pivoted on the holder and engaged by a wing nut forsecuring the bar 24 in the positions of Figs. 1 and 3.

The holder is rotated to cause the hot water and caustic soda within thetank to surge through the filtering media in the cell by a crank 27 on:the'free end of thestub shaft 19 which extends through the side Wall ofthe tank 9. The bearing 17 and stub shaft 19 are packed to preventleakage therebetween by a suitable packing device indicated at 28 (Fig.3).

It is usually necessary to thoroughly elean the cell to impart t0 theholder a fewrevolntions in one direction when its direction of rotationis reversed in order to rotate it several times in the other direction.To rem'ovethe clean cell it is only necessary to remove the cover 11,unfasten the bar 24 and swing it out of the way.

"mg the rotation What is claimed 1. A filter cell in combination, a tankfor washing fluid, a holder rotatably mounted within-the tank andconstructed to receive a single filter cell said holder having solidbottom and en faces and open top and side faces, means for barring theopen top of the holder for keeping the filter cell within the holderduring the rotation thereof, and a device outside the tank for rotatingthe holder.

2. A filter ce'll washing machine havin in combination, ajtank forwashing flui a holderrotatably mounted within the tank and constructedto receive a single filter cell, said holder having solid bottom and endfaces and open top and side faces, a bar pivoted on the holder and arraned to extend across the open top of the older for as new, is:

washing machine having,

keeping the filter cell within the holder dur-.

thereof, means. for locking the -Jaar in keeping position, and a deviceoutsid' thetank for rotating the holder.

In testimony whereof I have signed my name to this specification.

JAMES JARVIS PREBLE.

